Latch



(No Model.)

K. CLEMENTSBN.

LATCH.

No. 328,763. Patented Oct. 20, 1885.

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Wl TJVL SSES UNITED STATES PATENT OFFICE,

' KNUD CLEMENTSEN, OF CHICAGO, ILLINOIS.

LATCH.

SPECIFICATION forming part of Letters Patent No. 328,763, dated October 20, 1885. Application filed August 24, 1885. Serial No. 175,230; (No model.)

To all whom t may concern:

Be it known that l, KNUD CLEMENTsEN, a subject of the King of Norway, and a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Latches; and I do hereby de: Clare that the following is a full, clear, and ex` act description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specication, and in which- Figure l is a perspective view of a portion of a door provided with my improved latch. Fig. 2 is a longitudinal sectional view of the latch. Fig. 3 is an inside view of the latch, and Fig. 4 is a perspective det-ail view of the bolt and operating-lever.

Similar letters of reference indicate corre. spending parts in all the figures.

My invention has relation to latches for swinging or sliding doors or similar objects; and it consists in the improved construction and combination of parts of the same, as here inafter more fully described and claimed.

In the accompanying drawings, the letter A indicates the casing ot' the latch, the sides of which are formed with perforated lips B, for the passage of the fastening-screws C, and the rear portion of which casing is formed with a curved and looped handle, D, having a perforation, E, in its end for the passage of a fastening-screw, F.

The outer side of the casing is cut away to form a slot or aperture, G, through which the outer side of the sliding bolt H is exposed, the said bolt sliding in the casing, and this bolt is formed with a longitudinal slot, I, through which the operating thumb-lever J projects. The rear end of the bolt is reduced, as shown atK,andaspiral spring, L, is wrapped around this reduced portion, having one end resting in a recess, M, in the inner end of the casing, while its outer end bears against the inner end of the bolt, forcing it outward. The outer end of the bolt is beveled, as shown at N, having an inwardly-projecting lip, O, formed at the inner portion of the beveledend.

The inner end of the thumblever is provided with a cross-head, l?, which rocks in bearings formed by two pairs of lugs, Q Q,

projecting from the edges of the recess of the casing, the said lips having their outer ends bent over the ends of the cross-head, so as to confine the same, and the outer end, R, of the thumb-lever is dat for convenient manipulation.

The face of the door has a recess, S, for the reception of the inwardly-projecting lugs and for the free passage of the inwardly-projecting lip upon the beveled end of the bolt, and the beveled end of the bolt may be introduced into and retained within the catch-plate T upon the door-jamb, when the door is closed.

It will be seen that this latch combines a handle with the latch, the curved or loop shaped handle serving as well as a handle in opening the door as for the purpose of giving the hand support in operating the thumb-lever, the loop-shaped handle affording a rest for the second or third linger of the hand while the thumb is pressed against the thumblever. By pressing the thumb-lever toward the inner end of the casing the bolt will be drawn in, and the spring in the casing will force the bolt out when the thumb-lever is released, so as to make the latch automatic.

The latch is preferably made of malleable metal, or, at all events, the casing is made of a malleable metal, so that the lugs forming the bearings for the cross-head of the thumblever may be bent over the ends of the same, and the entire latch is very simple of construction and composed of comparatively few pieces, which may be put together without the use of a great many tools or a large quantity of machinery, so that the latch may be manufactured at a comparatively low cost.

The latch may be used for all kinds of swinging doors, and may also, by making the head of the bolt square or beveled to another side, be used for sliding doors or other similar objects-as, for instance, it may be used as a sash-lock,secured upon the side rail of a sliding window-sash engaging a catch upon the Window-jamb.

Havingthus described my invention,I claim and desire to secure by Letters Patent of the United States l. In a latch, the combination, with a slotted casing having a pair of inwardly-projecting slotted lugs, of a slotted bolt sliding longitudinally in said casing, and a thumb-lever ICO havir g a crosslhead'at its innerend'and'fpassing through the bolt fandfcasing, thel ends Lf the slotted lugs being bent around the ends of t-he cross-head and forming bearings for the same, substantially as and for the purpose set forth.

2. The combination of a 'casing having' a'fnV aperture in its upper side and formed with two laterally-proj ecting perforated lips and with a rearwardly-proj eoting curved loop-shaped handle and a pair of inwardly-projecting lugs at the edges of itsrecessyabolt having a` Ion-wV gitudinai slot and a reduced inner end and sliding in the casing, a spring wrapped around the reduced end of the bolt and bearing yagainstvthe inner end of -theoasiug;` and a -thumb--leverhavingfa cross-headi-Lat its inner end rocking in bearings formed by the ends of the said lugs, curved over the same, and projeoting through the slot in the boit and the ap- 2o erture `in the-.easingfas vand-.for the purpose shown 'andset forth.

In testimony that I-olaim the foregoing as rny'o'wn I have hereunto affixed my signature in presence of two Witnesses.

KNUD GLEMENTSEN.

Vitnesses: d

GEORG' WELLIN,Y T. G. PIHLFELDT. 

